Rerurn to Romy the Cat's Site

I have found the problem and was able to resolve the noise quandary.

The Lavry ADC has balance analog input and the Sansui has single-ended output. I use my PAD’s Dominus cable with an RCA to XLR adapter. The adaptor was made by BAT and I used it for another project to have in it the 12dB voltage devider. I opened it up, re-soldered the contacts and reassembled the adapter. I did not mean to use it eventually but for sake of tests I thought to use an adapter should be OK. Here is the catch: the BAT adapter is not grounded by default as it has a Teflon separation between the RCA source and XLR load. Since I do not do anything balanced for years I kind of never cared that an inch of the space inside of the adapter was not shielded and that there was no direct contact between the grounds of the components and the shields of the XLR adapter. In the case when the adapter not juts route the pins but also convert grounds from XLR to RCA the proper grounding become an issues but I stupidly did not use the third pin and continues treat it as a single ended-pair where the twist is enough most of the time …. Also, the Larvy ADC is stunningly sensitive at it’s inputs and require very heavily shielded cables, according to the Larvy application engineers. I end up with buying another cheap temporary adapters form pro shop, explicitly ground them and drop the POD cable as they are essentially not shielded. When the nose is gone… I think I would need to find a pair of XLR-RCA quarto-shielded patches for future…

So, what was then… As before, I connected the tuner into the Lavry ADC and the ADC directly into the Bidat…

In short, it was quite remarkable and frankly speaking I DID NOT ANTICIPATE that it might be so good.  The preamp was deed by FM-direct and FM-ADC-DAC run. I’m so || close to declare that the result is absolutely identical, no mater how unrealistic it might sound. Ironically the sound is virtually identical although I use the crapy cables and without final tuning of ADC (it runs now 16/44). Interesting that the result is virtually identical while I DO NOT USE the entire dynamic range of the Lavry ADC.  In order to have the identical volumes from tuner and DAC I can use only the ADC input adjustments and of course no DAC ether ADC has any volume advisement at digital domain. So, I have very good (identical!!!) result without even using a full ADC’s range. (At the loudest picks the ADC show –12dB) I mean… running it a full dynamic range, take care about the cables   and fine more suitable “modus operandi” for the ADC should give a even better (!)  result?  Hey, and I do appreciate what is going on even right now!

Frankly speaking it kind of irrational. The direct analog feed vs the feed coming via DAC-and ADC and practically no worsening of sound! I remember in my youth I records a lot of reel-to-reel and I never was able to make the original tape hiss and the hiss coming form a copy to have the absolutely identical harmonics, it always was very slightly off. Here, the FM nose if absolutely the same form the FM feed and via the digital feed. I mean I flip the preamp freed with a remote control and there is NO EVENT IN SOUND, no event at all!!!!

Anyhow, I’m so pleased that I am VERY strongly consider not to try the Lavry DAC now…

One more question that I would sadly be asking… IF THAT RESULT IS AVAILABLE then why we have our digital so much more horrible then our analog? Anyhow, I need to open an audiophile freak show in my listening room… :-)

In a series note, I would like to look at it more and see at the result deeper. So far, at the level of “the sounds” everything looks very-very attractive

Rgs,
The caT

Rerurn to Romy the Cat's Site